Grooved stencil card



Aug. 30, 1932. H. P. ELLIOTT GROOVED STENCIL CARD Filed July 15. 19:31

INVENTOR Harmon EEllz'oiZ ATTORNEY Patented Aug. 30, 1932 UNITED STATES Parent OFFICE HARMQN 1P. ELLIOTT, OF WATERTOWN, MASSACHUSETTS, ASSIGNOR TO ELLIOTT AD- DRESSING MACHINE GOMPANY, A CORPORATION OF MASSACHUSETTS enoovnn STENCIL CARD Application filed July 15, 1931. Serial No. 550,836.

This invention relates generally to stencil printing apparatus and more specifically 6 combination thereof with other portions of the apparatus arranged for operating directly therewith.

Among the objects of the invention are the production of a stencil-card which can be. easily constructed and without posslbility of portions of cement being left upon the exposed surfaces thereof, and the production of such a stencil-card which may be slid along the grooved guides of standard stencil addressing machines without the stencil paper thereon'coming in contact with said guides.

The best form of apparatus at present known to me embodying my invention is illustrated in the accompanylng drawing in which Fig. 1 is a perspective view of the of a stencihcard.

Fig. 2 is an enlarged cross section through such a card and the grooved guide rails of a stencil printing machine apparatus, parts being broken away.

Fig. 3 is a plan view of the same apparatus with parts broken away.

Throughout the drawing, like reference characters indicate like parts.

1 is the rectangular frame of a stencil-card of standard type, usually made of a relatively thick, stiff paper, paste-board or card-board material which, according to my invention, has the relatively narrow and shallow groove 2 stamped or otherwise formed in one face thereof and extending substantially all the way around the frame along lines intermediate of the inner and outer edges of said frame structure.

Referring to Figs. 2 and 3, a body of cementitious material 8 (usually shellac) is shown as having been deposited in and substantially filling said groove 2 so that when a sheet of stencil paper 4 of any preferred character is placed on the grooved face of said frame 1 with its edges slightly overlapping the outer edges of groove 2, as best shown in Fig. 3, and pressed down upon the adhesive material in said groove, it will be frame firmly cementedto said frame when said in aterial sets or dries.

Preferably the edges of said stencil paper 4 along the longer and opposite sides of the frame are spaced away from such frame edges by a distance slightly more than the depth of the grooves 66 in the oppositely disposed guide rails 55 of a standard type of addressing machines using stencil-cards.

Among the advantages of the invention may be mentioned the segregation of the cementitious material within the sharply defined limits of the groove 2 so that even with any careless manipulation during the manufacturing process none of said cementitious material can be squeezed outwardly either to, or beyond, the outer edges of the stencil paper 4, or the inner edges of the frame 1; and also the avoidance of any tendency of the rough edges of the paper to rub upon the guides 5, thereby producing unnecessary friction and liability of a tearing off of portions of the paper, both of which difiiculties have arisen in the use of stencil-cards heretofore made of this general type, by prior processes. Any such exposed cementitious matter, of course, may cause said stencils to stick together in the magazine and so interfere with proper operation of the apparatus.

It is to be understood, of course, that the drawing is diagrammatic and the invention not limited to the relative proportions of the apparatus there shown, so long as the general arrangement and mutual cooperation of the various elements of the invention as above described, are retained.

Having described my invention, I claim:

1. As a new article of manufacture, a stencil-card comprising a relatively thick, stifi, rectangular frame having a narrow groove formed in one face and extending substantially all the way around the said frame along lines lying intermediately of the inner and outer edges thereof, a body of cementitious material lying in said groove, and a sheet of stencil paper resting on the grooved face of said frame and over-lying said groove and fastened to said frame by said cementitious material.

2. A stencil-card such as defined in claim v 2 v c 1,874,476

1 in which the said sheet of stencil paper extends only' slight distances beyond said groove, portions of the face of said frame extending beyond said pa er edges being left free for engagement with the grooves of the stencil guides of a printing apparatus employing said stencil.

3. A rectangular frame of stiff, relatively thick paper construction, having a relatively narrow,-shallow groove, formed in one face of, and extending around, said frame along lines lying intermediately of the inner and outer edges thereof.

Signed at Cambridge, in the county of Middlesex and State of Massachusetts, this Sthday of July, A. D. 1931.

HARMON P. ELLIOTT. 

